Abstract :
[en] The food security has always been the focus of global attention. As an important material basis for human survival and development, cultivated land plays an important role in sustainable socioeconomic development. About 70% of China's 120 million ha of arable land are mid to low-yield fields. On the one hand, it is the result of the insufficiency in farmland infrastructure and land fragmentation, which leads to inefficient agricultural production and has difficulty in response to natural disasters due to climate change. On the other hand, the application of chemical inputs is significantly higher than the level of developed countries. The excessive input utilization and the random disposal of agricultural waste have caused non-point source pollution, and the negative environmental benefits have become more and more serious. Therefore, China has an increasingly profound awareness of farmland systems to respond to climate change and protect the quality of farmland. In the context of the United Nations Sustainable Development Goals, China has formulated its latest farmland development plan, the integrated of "production-ecologylivelihood" sustainable farmland pilot demonstration is proposed. In other words, under the multiple goals of " ensuring food security, promoting eco-friendly and increasing farmers' income", the improvement of infrastructure and the transformation of production practices can be synergistically promoted. With these objectives, China is faced with multiple challenges in promoting the process of farmland construction and management. The construction content of highstandard farmland takes insufficient consideration of farmland ecology, and the problems of high-standard farmland which has not matched with standardized and green production practices are highlighted. Moreover, Farmland development activities, which are led by the government entirely, put tremendous pressure on the central treasury, while the lack of participation of other stakeholders results in inefficient farmland development. There are contradictions in the construction of farmland such as the imbalance between governments' supply and farmers' demand, and low construction standards. In order to meet the needs of high-quality and sustainable agricultural, optimizing the mode of farmland development and improving its management mechanism are the major concerns of government management and academia. The study is based on the perspective of agricultural economics research and aims to optimize the farmland development management system by incorporating farmer participation. three core issues were addressed: a) Chapter 4 quantifies the current three main farmland and farming systems through life cycle assessment, life cycle cost, cost-benefit analysis and net ecosystem economic benefit. The results
